src/third_party/WebKit/Source/web/tests/WEBPImageDecoderTest.cpp

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  30
  31 #include "config.h"
  32
  33 #include "platform/image-decoders/webp/WEBPImageDecoder.h"
  34
  35 #include "RuntimeEnabledFeatures.h"
  36 #include "platform/SharedBuffer.h"
  37 #include "public/platform/Platform.h"
  38 #include "public/platform/WebData.h"
  39 #include "public/platform/WebSize.h"
  40 #include "public/platform/WebUnitTestSupport.h"
  41 #include "wtf/OwnPtr.h"
  42 #include "wtf/PassOwnPtr.h"
  43 #include "wtf/StringHasher.h"
  44 #include "wtf/Vector.h"
  45 #include "wtf/dtoa/utils.h"
  46 #include <gtest/gtest.h>
  47
  48 using namespace WebCore;
  49 using namespace blink;
  50
  51 namespace {
  52
  53 PassRefPtr<SharedBuffer> readFile(const char* fileName)
  54 {
  55     String filePath = Platform::current()->unitTestSupport()->webKitRootDir();
  56     filePath.append(fileName);
  57
  58     return Platform::current()->unitTestSupport()->readFromFile(filePath);
  59 }
  60
  61 PassOwnPtr<WEBPImageDecoder> createDecoder()
  62 {
  63     return adoptPtr(new WEBPImageDecoder(ImageSource::AlphaNotPremultiplied, ImageSource::GammaAndColorProfileApplied, ImageDecoder::noDecodedImageByteLimit));
  64 }
  65
  66 unsigned hashSkBitmap(const SkBitmap& bitmap)
  67 {
  68     return StringHasher::hashMemory(bitmap.getPixels(), bitmap.getSize());
  69 }
  70
  71 void createDecodingBaseline(SharedBuffer* data, Vector<unsigned>* baselineHashes)
  72 {
  73     OwnPtr<WEBPImageDecoder> decoder = createDecoder();
  74     decoder->setData(data, true);
  75     size_t frameCount = decoder->frameCount();
  76     for (size_t i = 0; i < frameCount; ++i) {
  77         ImageFrame* frame = decoder->frameBufferAtIndex(i);
  78         baselineHashes->append(hashSkBitmap(frame->getSkBitmap()));
  79     }
  80 }
  81
  82 void testRandomFrameDecode(const char* webpFile)
  83 {
  84     SCOPED_TRACE(webpFile);
  85
  86     RefPtr<SharedBuffer> fullData = readFile(webpFile);
  87     ASSERT_TRUE(fullData.get());
  88     Vector<unsigned> baselineHashes;
  89     createDecodingBaseline(fullData.get(), &baselineHashes);
  90     size_t frameCount = baselineHashes.size();
  91
  92     // Random decoding should get the same results as sequential decoding.
  93     OwnPtr<WEBPImageDecoder> decoder = createDecoder();
  94     decoder->setData(fullData.get(), true);
  95     const size_t skippingStep = 5;
  96     for (size_t i = 0; i < skippingStep; ++i) {
  97         for (size_t j = i; j < frameCount; j += skippingStep) {
  98             SCOPED_TRACE(testing::Message() << "Random i:" << i << " j:" << j);
  99             ImageFrame* frame = decoder->frameBufferAtIndex(j);
 100             EXPECT_EQ(baselineHashes[j], hashSkBitmap(frame->getSkBitmap()));
 101         }
 102     }
 103
 104     // Decoding in reverse order.
 105     decoder = createDecoder();
 106     decoder->setData(fullData.get(), true);
 107     for (size_t i = frameCount; i; --i) {
 108         SCOPED_TRACE(testing::Message() << "Reverse i:" << i);
 109         ImageFrame* frame = decoder->frameBufferAtIndex(i - 1);
 110         EXPECT_EQ(baselineHashes[i - 1], hashSkBitmap(frame->getSkBitmap()));
 111     }
 112 }
 113
 114 void testRandomDecodeAfterClearFrameBufferCache(const char* webpFile)
 115 {
 116     SCOPED_TRACE(webpFile);
 117
 118     RefPtr<SharedBuffer> data = readFile(webpFile);
 119     ASSERT_TRUE(data.get());
 120     Vector<unsigned> baselineHashes;
 121     createDecodingBaseline(data.get(), &baselineHashes);
 122     size_t frameCount = baselineHashes.size();
 123
 124     OwnPtr<WEBPImageDecoder> decoder = createDecoder();
 125     decoder->setData(data.get(), true);
 126     for (size_t clearExceptFrame = 0; clearExceptFrame < frameCount; ++clearExceptFrame) {
 127         decoder->clearCacheExceptFrame(clearExceptFrame);
 128         const size_t skippingStep = 5;
 129         for (size_t i = 0; i < skippingStep; ++i) {
 130             for (size_t j = 0; j < frameCount; j += skippingStep) {
 131                 SCOPED_TRACE(testing::Message() << "Random i:" << i << " j:" << j);
 132                 ImageFrame* frame = decoder->frameBufferAtIndex(j);
 133                 EXPECT_EQ(baselineHashes[j], hashSkBitmap(frame->getSkBitmap()));
 134             }
 135         }
 136     }
 137 }
 138
 139 void testDecodeAfterReallocatingData(const char* webpFile)
 140 {
 141     OwnPtr<WEBPImageDecoder> decoder = createDecoder();
 142     RefPtr<SharedBuffer> data = readFile(webpFile);
 143     ASSERT_TRUE(data.get());
 144
 145     // Parse from 'data'.
 146     decoder->setData(data.get(), true);
 147     size_t frameCount = decoder->frameCount();
 148
 149     // ... and then decode frames from 'reallocatedData'.
 150     RefPtr<SharedBuffer> reallocatedData = data.get()->copy();
 151     ASSERT_TRUE(reallocatedData.get());
 152     data.clear();
 153     decoder->setData(reallocatedData.get(), true);
 154
 155     for (size_t i = 0; i < frameCount; ++i) {
 156         const ImageFrame* const frame = decoder->frameBufferAtIndex(i);
 157         EXPECT_EQ(ImageFrame::FrameComplete, frame->status());
 158     }
 159 }
 160
 161 // If 'parseErrorExpected' is true, error is expected during parse (frameCount()
 162 // call); else error is expected during decode (frameBufferAtIndex() call).
 163 void testInvalidImage(const char* webpFile, bool parseErrorExpected)
 164 {
 165     OwnPtr<WEBPImageDecoder> decoder = createDecoder();
 166
 167     RefPtr<SharedBuffer> data = readFile(webpFile);
 168     ASSERT_TRUE(data.get());
 169     decoder->setData(data.get(), true);
 170
 171     if (parseErrorExpected)
 172         EXPECT_EQ(0u, decoder->frameCount());
 173     else
 174         EXPECT_LT(0u, decoder->frameCount());
 175     ImageFrame* frame = decoder->frameBufferAtIndex(0);
 176     EXPECT_FALSE(frame);
 177     EXPECT_EQ(cAnimationLoopOnce, decoder->repetitionCount());
 178 }
 179
 180 } // namespace
 181
 182 class AnimatedWebPTests : public ::testing::Test {
 183 protected:
 184     virtual void SetUp()
 185     {
 186         // Enable animated WebP for all the tests.
 187         WebCore::RuntimeEnabledFeatures::setAnimatedWebPEnabled(true);
 188     }
 189 };
 190
 191 TEST_F(AnimatedWebPTests, uniqueGenerationIDs)
 192 {
 193     OwnPtr<WEBPImageDecoder> decoder = createDecoder();
 194
 195     RefPtr<SharedBuffer> data = readFile("/LayoutTests/fast/images/resources/webp-animated.webp");
 196     ASSERT_TRUE(data.get());
 197     decoder->setData(data.get(), true);
 198
 199     ImageFrame* frame = decoder->frameBufferAtIndex(0);
 200     uint32_t generationID0 = frame->getSkBitmap().getGenerationID();
 201     frame = decoder->frameBufferAtIndex(1);
 202     uint32_t generationID1 = frame->getSkBitmap().getGenerationID();
 203
 204     EXPECT_TRUE(generationID0 != generationID1);
 205 }
 206
 207 TEST_F(AnimatedWebPTests, verifyAnimationParametersTransparentImage)
 208 {
 209     OwnPtr<WEBPImageDecoder> decoder = createDecoder();
 210     EXPECT_EQ(cAnimationLoopOnce, decoder->repetitionCount());
 211
 212     RefPtr<SharedBuffer> data = readFile("/LayoutTests/fast/images/resources/webp-animated.webp");
 213     ASSERT_TRUE(data.get());
 214     decoder->setData(data.get(), true);
 215
 216     const int canvasWidth = 11;
 217     const int canvasHeight = 29;
 218     const struct AnimParam {
 219         int xOffset, yOffset, width, height;
 220         ImageFrame::DisposalMethod disposalMethod;
 221         ImageFrame::AlphaBlendSource alphaBlendSource;
 222         unsigned duration;
 223         bool hasAlpha;
 224     } frameParameters[] = {
 225         { 0, 0, 11, 29, ImageFrame::DisposeKeep, ImageFrame::BlendAtopPreviousFrame, 1000u, true },
 226         { 2, 10, 7, 17, ImageFrame::DisposeKeep, ImageFrame::BlendAtopPreviousFrame, 500u, true },
 227         { 2, 2, 7, 16, ImageFrame::DisposeKeep, ImageFrame::BlendAtopPreviousFrame, 1000u, true },
 228     };
 229
 230     for (size_t i = 0; i < ARRAY_SIZE(frameParameters); ++i) {
 231         const ImageFrame* const frame = decoder->frameBufferAtIndex(i);
 232         EXPECT_EQ(ImageFrame::FrameComplete, frame->status());
 233         EXPECT_EQ(canvasWidth, frame->getSkBitmap().width());
 234         EXPECT_EQ(canvasHeight, frame->getSkBitmap().height());
 235         EXPECT_EQ(frameParameters[i].xOffset, frame->originalFrameRect().x());
 236         EXPECT_EQ(frameParameters[i].yOffset, frame->originalFrameRect().y());
 237         EXPECT_EQ(frameParameters[i].width, frame->originalFrameRect().width());
 238         EXPECT_EQ(frameParameters[i].height, frame->originalFrameRect().height());
 239         EXPECT_EQ(frameParameters[i].disposalMethod, frame->disposalMethod());
 240         EXPECT_EQ(frameParameters[i].alphaBlendSource, frame->alphaBlendSource());
 241         EXPECT_EQ(frameParameters[i].duration, frame->duration());
 242         EXPECT_EQ(frameParameters[i].hasAlpha, frame->hasAlpha());
 243     }
 244
 245     EXPECT_EQ(ARRAY_SIZE(frameParameters), decoder->frameCount());
 246     EXPECT_EQ(cAnimationLoopInfinite, decoder->repetitionCount());
 247 }
 248
 249 TEST_F(AnimatedWebPTests, verifyAnimationParametersOpaqueFramesTransparentBackground)
 250 {
 251     OwnPtr<WEBPImageDecoder> decoder = createDecoder();
 252     EXPECT_EQ(cAnimationLoopOnce, decoder->repetitionCount());
 253
 254     RefPtr<SharedBuffer> data = readFile("/LayoutTests/fast/images/resources/webp-animated-opaque.webp");
 255     ASSERT_TRUE(data.get());
 256     decoder->setData(data.get(), true);
 257
 258     const int canvasWidth = 94;
 259     const int canvasHeight = 87;
 260     const struct AnimParam {
 261         int xOffset, yOffset, width, height;
 262         ImageFrame::DisposalMethod disposalMethod;
 263         ImageFrame::AlphaBlendSource alphaBlendSource;
 264         unsigned duration;
 265         bool hasAlpha;
 266     } frameParameters[] = {
 267         { 4, 10, 33, 32, ImageFrame::DisposeOverwriteBgcolor, ImageFrame::BlendAtopPreviousFrame, 1000u, true },
 268         { 34, 30, 33, 32, ImageFrame::DisposeOverwriteBgcolor, ImageFrame::BlendAtopPreviousFrame, 1000u, true },
 269         { 62, 50, 32, 32, ImageFrame::DisposeOverwriteBgcolor, ImageFrame::BlendAtopPreviousFrame, 1000u, true },
 270         { 10, 54, 32, 33, ImageFrame::DisposeOverwriteBgcolor, ImageFrame::BlendAtopPreviousFrame, 1000u, true },
 271     };
 272
 273     for (size_t i = 0; i < ARRAY_SIZE(frameParameters); ++i) {
 274         const ImageFrame* const frame = decoder->frameBufferAtIndex(i);
 275         EXPECT_EQ(ImageFrame::FrameComplete, frame->status());
 276         EXPECT_EQ(canvasWidth, frame->getSkBitmap().width());
 277         EXPECT_EQ(canvasHeight, frame->getSkBitmap().height());
 278         EXPECT_EQ(frameParameters[i].xOffset, frame->originalFrameRect().x());
 279         EXPECT_EQ(frameParameters[i].yOffset, frame->originalFrameRect().y());
 280         EXPECT_EQ(frameParameters[i].width, frame->originalFrameRect().width());
 281         EXPECT_EQ(frameParameters[i].height, frame->originalFrameRect().height());
 282         EXPECT_EQ(frameParameters[i].disposalMethod, frame->disposalMethod());
 283         EXPECT_EQ(frameParameters[i].alphaBlendSource, frame->alphaBlendSource());
 284         EXPECT_EQ(frameParameters[i].duration, frame->duration());
 285         EXPECT_EQ(frameParameters[i].hasAlpha, frame->hasAlpha());
 286     }
 287
 288     EXPECT_EQ(ARRAY_SIZE(frameParameters), decoder->frameCount());
 289     EXPECT_EQ(cAnimationLoopInfinite, decoder->repetitionCount());
 290 }
 291
 292 TEST_F(AnimatedWebPTests, verifyAnimationParametersBlendOverwrite)
 293 {
 294     OwnPtr<WEBPImageDecoder> decoder = createDecoder();
 295     EXPECT_EQ(cAnimationLoopOnce, decoder->repetitionCount());
 296
 297     RefPtr<SharedBuffer> data = readFile("/LayoutTests/fast/images/resources/webp-animated-no-blend.webp");
 298     ASSERT_TRUE(data.get());
 299     decoder->setData(data.get(), true);
 300
 301     const int canvasWidth = 94;
 302     const int canvasHeight = 87;
 303     const struct AnimParam {
 304         int xOffset, yOffset, width, height;
 305         ImageFrame::DisposalMethod disposalMethod;
 306         ImageFrame::AlphaBlendSource alphaBlendSource;
 307         unsigned duration;
 308         bool hasAlpha;
 309     } frameParameters[] = {
 310         { 4, 10, 33, 32, ImageFrame::DisposeOverwriteBgcolor, ImageFrame::BlendAtopBgcolor, 1000u, true },
 311         { 34, 30, 33, 32, ImageFrame::DisposeOverwriteBgcolor, ImageFrame::BlendAtopBgcolor, 1000u, true },
 312         { 62, 50, 32, 32, ImageFrame::DisposeOverwriteBgcolor, ImageFrame::BlendAtopBgcolor, 1000u, true },
 313         { 10, 54, 32, 33, ImageFrame::DisposeOverwriteBgcolor, ImageFrame::BlendAtopBgcolor, 1000u, true },
 314     };
 315
 316     for (size_t i = 0; i < ARRAY_SIZE(frameParameters); ++i) {
 317         const ImageFrame* const frame = decoder->frameBufferAtIndex(i);
 318         EXPECT_EQ(ImageFrame::FrameComplete, frame->status());
 319         EXPECT_EQ(canvasWidth, frame->getSkBitmap().width());
 320         EXPECT_EQ(canvasHeight, frame->getSkBitmap().height());
 321         EXPECT_EQ(frameParameters[i].xOffset, frame->originalFrameRect().x());
 322         EXPECT_EQ(frameParameters[i].yOffset, frame->originalFrameRect().y());
 323         EXPECT_EQ(frameParameters[i].width, frame->originalFrameRect().width());
 324         EXPECT_EQ(frameParameters[i].height, frame->originalFrameRect().height());
 325         EXPECT_EQ(frameParameters[i].disposalMethod, frame->disposalMethod());
 326         EXPECT_EQ(frameParameters[i].alphaBlendSource, frame->alphaBlendSource());
 327         EXPECT_EQ(frameParameters[i].duration, frame->duration());
 328         EXPECT_EQ(frameParameters[i].hasAlpha, frame->hasAlpha());
 329     }
 330
 331     EXPECT_EQ(ARRAY_SIZE(frameParameters), decoder->frameCount());
 332     EXPECT_EQ(cAnimationLoopInfinite, decoder->repetitionCount());
 333 }
 334
 335 TEST_F(AnimatedWebPTests, parseAndDecodeByteByByte)
 336 {
 337     const struct TestImage {
 338         const char* filename;
 339         unsigned frameCount;
 340         int repetitionCount;
 341     } testImages[] = {
 342         { "/LayoutTests/fast/images/resources/webp-animated.webp", 3u, cAnimationLoopInfinite },
 343         { "/LayoutTests/fast/images/resources/webp-animated-icc-xmp.webp", 13u, 32000 },
 344     };
 345
 346     for (size_t i = 0; i < ARRAY_SIZE(testImages); ++i) {
 347         OwnPtr<WEBPImageDecoder> decoder = createDecoder();
 348         RefPtr<SharedBuffer> data = readFile(testImages[i].filename);
 349         ASSERT_TRUE(data.get());
 350
 351         size_t frameCount = 0;
 352         size_t framesDecoded = 0;
 353
 354         // Pass data to decoder byte by byte.
 355         for (size_t length = 1; length <= data->size(); ++length) {
 356             RefPtr<SharedBuffer> tempData = SharedBuffer::create(data->data(), length);
 357             decoder->setData(tempData.get(), length == data->size());
 358
 359             EXPECT_LE(frameCount, decoder->frameCount());
 360             frameCount = decoder->frameCount();
 361
 362             ImageFrame* frame = decoder->frameBufferAtIndex(frameCount - 1);
 363             if (frame && frame->status() == ImageFrame::FrameComplete && framesDecoded < frameCount)
 364                 ++framesDecoded;
 365         }
 366
 367         EXPECT_EQ(testImages[i].frameCount, decoder->frameCount());
 368         EXPECT_EQ(testImages[i].frameCount, framesDecoded);
 369         EXPECT_EQ(testImages[i].repetitionCount, decoder->repetitionCount());
 370     }
 371 }
 372
 373 TEST_F(AnimatedWebPTests, invalidImages)
 374 {
 375     // ANMF chunk size is smaller than ANMF header size.
 376     testInvalidImage("/LayoutTests/fast/images/resources/invalid-animated-webp.webp", true);
 377     // One of the frame rectangles extends outside the image boundary.
 378     testInvalidImage("/LayoutTests/fast/images/resources/invalid-animated-webp3.webp", true);
 379 }
 380
 381 TEST_F(AnimatedWebPTests, truncatedLastFrame)
 382 {
 383     OwnPtr<WEBPImageDecoder> decoder = createDecoder();
 384
 385     RefPtr<SharedBuffer> data = readFile("/LayoutTests/fast/images/resources/invalid-animated-webp2.webp");
 386     ASSERT_TRUE(data.get());
 387     decoder->setData(data.get(), true);
 388
 389     unsigned frameCount = 8;
 390     EXPECT_EQ(frameCount, decoder->frameCount());
 391     ImageFrame* frame = decoder->frameBufferAtIndex(frameCount - 1);
 392     EXPECT_FALSE(frame);
 393     frame = decoder->frameBufferAtIndex(0);
 394     EXPECT_FALSE(frame);
 395 }
 396
 397 TEST_F(AnimatedWebPTests, truncatedInBetweenFrame)
 398 {
 399     OwnPtr<WEBPImageDecoder> decoder = createDecoder();
 400
 401     RefPtr<SharedBuffer> fullData = readFile("/LayoutTests/fast/images/resources/invalid-animated-webp4.webp");
 402     ASSERT_TRUE(fullData.get());
 403     RefPtr<SharedBuffer> data = SharedBuffer::create(fullData->data(), fullData->size() - 1);
 404     decoder->setData(data.get(), false);
 405
 406     ImageFrame* frame = decoder->frameBufferAtIndex(2);
 407     EXPECT_FALSE(frame);
 408 }
 409
 410 // Reproduce a crash that used to happen for a specific file with specific sequence of method calls.
 411 TEST_F(AnimatedWebPTests, reproCrash)
 412 {
 413     OwnPtr<WEBPImageDecoder> decoder = createDecoder();
 414
 415     RefPtr<SharedBuffer> fullData = readFile("/LayoutTests/fast/images/resources/invalid_vp8_vp8x.webp");
 416     ASSERT_TRUE(fullData.get());
 417
 418     // Parse partial data up to which error in bitstream is not detected.
 419     const size_t partialSize = 32768;
 420     ASSERT_GT(fullData->size(), partialSize);
 421     RefPtr<SharedBuffer> data = SharedBuffer::create(fullData->data(), partialSize);
 422     decoder->setData(data.get(), false);
 423     EXPECT_EQ(1u, decoder->frameCount());
 424
 425     // Parse full data now. The error in bitstream should now be detected.
 426     decoder->setData(fullData.get(), true);
 427     EXPECT_EQ(0u, decoder->frameCount());
 428     ImageFrame* frame = decoder->frameBufferAtIndex(0);
 429     EXPECT_FALSE(frame);
 430     EXPECT_EQ(cAnimationLoopOnce, decoder->repetitionCount());
 431 }
 432
 433 TEST_F(AnimatedWebPTests, progressiveDecode)
 434 {
 435     RefPtr<SharedBuffer> fullData = readFile("/LayoutTests/fast/images/resources/webp-animated.webp");
 436     ASSERT_TRUE(fullData.get());
 437     const size_t fullLength = fullData->size();
 438
 439     OwnPtr<WEBPImageDecoder>  decoder;
 440     ImageFrame* frame;
 441
 442     Vector<unsigned> truncatedHashes;
 443     Vector<unsigned> progressiveHashes;
 444
 445     // Compute hashes when the file is truncated.
 446     const size_t increment = 1;
 447     for (size_t i = 1; i <= fullLength; i += increment) {
 448         decoder = createDecoder();
 449         RefPtr<SharedBuffer> data = SharedBuffer::create(fullData->data(), i);
 450         decoder->setData(data.get(), i == fullLength);
 451         frame = decoder->frameBufferAtIndex(0);
 452         if (!frame) {
 453             truncatedHashes.append(0);
 454             continue;
 455         }
 456         truncatedHashes.append(hashSkBitmap(frame->getSkBitmap()));
 457     }
 458
 459     // Compute hashes when the file is progressively decoded.
 460     decoder = createDecoder();
 461     for (size_t i = 1; i <= fullLength; i += increment) {
 462         RefPtr<SharedBuffer> data = SharedBuffer::create(fullData->data(), i);
 463         decoder->setData(data.get(), i == fullLength);
 464         frame = decoder->frameBufferAtIndex(0);
 465         if (!frame) {
 466             progressiveHashes.append(0);
 467             continue;
 468         }
 469         progressiveHashes.append(hashSkBitmap(frame->getSkBitmap()));
 470     }
 471
 472     bool match = true;
 473     for (size_t i = 0; i < truncatedHashes.size(); ++i) {
 474         if (truncatedHashes[i] != progressiveHashes[i]) {
 475             match = false;
 476             break;
 477         }
 478     }
 479     EXPECT_TRUE(match);
 480 }
 481
 482 TEST_F(AnimatedWebPTests, frameIsCompleteAndDuration)
 483 {
 484     OwnPtr<WEBPImageDecoder> decoder = createDecoder();
 485
 486     RefPtr<SharedBuffer> data = readFile("/LayoutTests/fast/images/resources/webp-animated.webp");
 487     ASSERT_TRUE(data.get());
 488
 489     ASSERT_GE(data->size(), 10u);
 490     RefPtr<SharedBuffer> tempData = SharedBuffer::create(data->data(), data->size() - 10);
 491     decoder->setData(tempData.get(), false);
 492
 493     EXPECT_EQ(2u, decoder->frameCount());
 494     EXPECT_FALSE(decoder->failed());
 495     EXPECT_TRUE(decoder->frameIsCompleteAtIndex(0));
 496     EXPECT_EQ(1000, decoder->frameDurationAtIndex(0));
 497     EXPECT_TRUE(decoder->frameIsCompleteAtIndex(1));
 498     EXPECT_EQ(500, decoder->frameDurationAtIndex(1));
 499
 500     decoder->setData(data.get(), true);
 501     EXPECT_EQ(3u, decoder->frameCount());
 502     EXPECT_TRUE(decoder->frameIsCompleteAtIndex(0));
 503     EXPECT_EQ(1000, decoder->frameDurationAtIndex(0));
 504     EXPECT_TRUE(decoder->frameIsCompleteAtIndex(1));
 505     EXPECT_EQ(500, decoder->frameDurationAtIndex(1));
 506     EXPECT_TRUE(decoder->frameIsCompleteAtIndex(2));
 507     EXPECT_EQ(1000.0, decoder->frameDurationAtIndex(2));
 508 }
 509
 510 TEST_F(AnimatedWebPTests, updateRequiredPreviousFrameAfterFirstDecode)
 511 {
 512     OwnPtr<WEBPImageDecoder> decoder = createDecoder();
 513
 514     RefPtr<SharedBuffer> fullData = readFile("/LayoutTests/fast/images/resources/webp-animated.webp");
 515     ASSERT_TRUE(fullData.get());
 516
 517     // Give it data that is enough to parse but not decode in order to check the status
 518     // of requiredPreviousFrameIndex before decoding.
 519     size_t partialSize = 1;
 520     do {
 521         RefPtr<SharedBuffer> data = SharedBuffer::create(fullData->data(), partialSize);
 522         decoder->setData(data.get(), false);
 523         ++partialSize;
 524     } while (!decoder->frameCount() || decoder->frameBufferAtIndex(0)->status() == ImageFrame::FrameEmpty);
 525
 526     EXPECT_EQ(kNotFound, decoder->frameBufferAtIndex(0)->requiredPreviousFrameIndex());
 527     unsigned frameCount = decoder->frameCount();
 528     for (size_t i = 1; i < frameCount; ++i)
 529         EXPECT_EQ(i - 1, decoder->frameBufferAtIndex(i)->requiredPreviousFrameIndex());
 530
 531     decoder->setData(fullData.get(), true);
 532     for (size_t i = 0; i < frameCount; ++i)
 533         EXPECT_EQ(kNotFound, decoder->frameBufferAtIndex(i)->requiredPreviousFrameIndex());
 534 }
 535
 536 TEST_F(AnimatedWebPTests, randomFrameDecode)
 537 {
 538     testRandomFrameDecode("/LayoutTests/fast/images/resources/webp-animated.webp");
 539     testRandomFrameDecode("/LayoutTests/fast/images/resources/webp-animated-opaque.webp");
 540     testRandomFrameDecode("/LayoutTests/fast/images/resources/webp-animated-large.webp");
 541     testRandomFrameDecode("/LayoutTests/fast/images/resources/webp-animated-icc-xmp.webp");
 542 }
 543
 544 TEST_F(AnimatedWebPTests, randomDecodeAfterClearFrameBufferCache)
 545 {
 546     testRandomDecodeAfterClearFrameBufferCache("/LayoutTests/fast/images/resources/webp-animated.webp");
 547     testRandomDecodeAfterClearFrameBufferCache("/LayoutTests/fast/images/resources/webp-animated-opaque.webp");
 548     testRandomDecodeAfterClearFrameBufferCache("/LayoutTests/fast/images/resources/webp-animated-large.webp");
 549     testRandomDecodeAfterClearFrameBufferCache("/LayoutTests/fast/images/resources/webp-animated-icc-xmp.webp");
 550 }
 551
 552 TEST_F(AnimatedWebPTests, resumePartialDecodeAfterClearFrameBufferCache)
 553 {
 554     RefPtr<SharedBuffer> fullData = readFile("/LayoutTests/fast/images/resources/webp-animated-large.webp");
 555     ASSERT_TRUE(fullData.get());
 556     Vector<unsigned> baselineHashes;
 557     createDecodingBaseline(fullData.get(), &baselineHashes);
 558     size_t frameCount = baselineHashes.size();
 559
 560     OwnPtr<WEBPImageDecoder> decoder = createDecoder();
 561
 562     // Let frame 0 be partially decoded.
 563     size_t partialSize = 1;
 564     do {
 565         RefPtr<SharedBuffer> data = SharedBuffer::create(fullData->data(), partialSize);
 566         decoder->setData(data.get(), false);
 567         ++partialSize;
 568     } while (!decoder->frameCount() || decoder->frameBufferAtIndex(0)->status() == ImageFrame::FrameEmpty);
 569
 570     // Skip to the last frame and clear.
 571     decoder->setData(fullData.get(), true);
 572     EXPECT_EQ(frameCount, decoder->frameCount());
 573     ImageFrame* lastFrame = decoder->frameBufferAtIndex(frameCount - 1);
 574     EXPECT_EQ(baselineHashes[frameCount - 1], hashSkBitmap(lastFrame->getSkBitmap()));
 575     decoder->clearCacheExceptFrame(kNotFound);
 576
 577     // Resume decoding of the first frame.
 578     ImageFrame* firstFrame = decoder->frameBufferAtIndex(0);
 579     EXPECT_EQ(ImageFrame::FrameComplete, firstFrame->status());
 580     EXPECT_EQ(baselineHashes[0], hashSkBitmap(firstFrame->getSkBitmap()));
 581 }
 582
 583 TEST_F(AnimatedWebPTests, decodeAfterReallocatingData)
 584 {
 585     testDecodeAfterReallocatingData("/LayoutTests/fast/images/resources/webp-animated.webp");
 586     testDecodeAfterReallocatingData("/LayoutTests/fast/images/resources/webp-animated-icc-xmp.webp");
 587 }
 588
 589 TEST(StaticWebPTests, truncatedImage)
 590 {
 591     // VP8 data is truncated.
 592     testInvalidImage("/LayoutTests/fast/images/resources/truncated.webp", false);
 593     // Chunk size in RIFF header doesn't match the file size.
 594     testInvalidImage("/LayoutTests/fast/images/resources/truncated2.webp", true);
 595 }